Which activities? I want to say the nucleus as it is the control center of the cell, but this is a vague question.
Biologists call those groups DOMAINS
Is caused by vibration, can travel through a vacum, and travels in longitudinal waves<span />
Um. The drawbacks to the extensive use of solar energy? well all the other statements about it are false so the correct answer would have to be B. Necessary equipment and installation are expensive
hope that helped
